feat: improve file handling with OS-specific functions and tests (#178)

- Add functions for removing and creating files/directories based on the operating system
- Add unit tests for the functions

Author: appleboy

command.go

@@ -1,22 +1,29 @@
 package main
 
+// This function returns the appropriate command for removing a file/directory based on the operating system.
 func rmcmd(os, target string) string {
 	switch os {
 	case "windows":
+		// On Windows, use DEL command to delete files and folders recursively
 		return "DEL /F /S " + target
 	case "unix":
+		// On Unix-based systems, use rm command to delete files and folders recursively
 		return "rm -rf " + target
 	}
+	// Return an empty string if the operating system is not recognized
 	return ""
 }
 
+// This function returns the appropriate command for creating a directory based on the operating system.
 func mkdircmd(os, target string) string {
 	switch os {
 	case "windows":
+		// On Windows, use mkdir command to create directory and check if it exists
 		return "if not exist " + target + " mkdir " + target
 	case "unix":
+		// On Unix-based systems, use mkdir command with -p option to create directories recursively
 		return "mkdir -p " + target
 	}
-
+	// Return an empty string if the operating system is not recognized
 	return ""
 }

command_test.go

@@ -0,0 +1,42 @@
+package main
+
+import "testing"
+
+// Unit tests for rmcmd and mkdircmd
+func TestCommands(t *testing.T) {
+	// Test rmcmd on Windows
+	os1 := "windows"
+	target1 := "C:\\path\\to\\file"
+	expected1 := "DEL /F /S " + target1
+	actual1 := rmcmd(os1, target1)
+	if actual1 != expected1 {
+		t.Errorf("rmcmd(%s, %s) = %s; expected %s", os1, target1, actual1, expected1)
+	}
+
+	// Test rmcmd on Unix-based system
+	os2 := "unix"
+	target2 := "/path/to/folder"
+	expected2 := "rm -rf " + target2
+	actual2 := rmcmd(os2, target2)
+	if actual2 != expected2 {
+		t.Errorf("rmcmd(%s, %s) = %s; expected %s", os2, target2, actual2, expected2)
+	}
+
+	// Test mkdircmd on Windows
+	os3 := "windows"
+	target3 := "C:\\path\\to\\folder"
+	expected3 := "if not exist " + target3 + " mkdir " + target3
+	actual3 := mkdircmd(os3, target3)
+	if actual3 != expected3 {
+		t.Errorf("mkdircmd(%s, %s) = %s; expected %s", os3, target3, actual3, expected3)
+	}
+
+	// Test mkdircmd on Unix-based system
+	os4 := "unix"
+	target4 := "/path/to/folder"
+	expected4 := "mkdir -p " + target4
+	actual4 := mkdircmd(os4, target4)
+	if actual4 != expected4 {
+		t.Errorf("mkdircmd(%s, %s) = %s; expected %s", os4, target4, actual4, expected4)
+	}
+}